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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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I have a 2007 Benz E320 blue tech 0M642 ENGINE. Keeps going

Customer Question

Hi I have a 2007 Benz E320 blue tech 0M642 ENGINE. Keeps going to fail safe mode and no power.The fall code is P2A00 it calls for 02 sensor circuit range performance bank 1, sensor 1, already replaced brand new upstream 02 sensor from dealer, code still keeps going back on fail safe after driving. Can you help me, would greatly appreciate if you can tell me where to start.
Submitted: 1 year ago.
Category: Mercedes
Customer: replied 1 year ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer: replied 1 year ago.
HI I NEED A ANSWER TONIGHT OR I NEED MY MONEY
Expert:  CHRIS ZAPANTIS replied 1 year ago.

Hello Im Chris and I will assist you

Expert:  CHRIS ZAPANTIS replied 1 year ago.

That code is not for a cuicuit problem. Its telling you that the sensor on the right bank is shifted towards lean.

Expert:  CHRIS ZAPANTIS replied 1 year ago.

It can be a bad oxygen sensor but most likely a vacuum leak

Expert:  CHRIS ZAPANTIS replied 1 year ago.

can you give me short and long term fuel trim?

Expert:  Lou P. master tech replied 1 year ago.

Hello, different expert here, are you still needing assistance? Lou P.